Gainward GTX Titan
HiRes - Batman Arkham City
As we've come to expect from Batman, it's easy to reach a point after which no amount of hardware will bring a benefit. The Titan is such a card, and almost doesn't care what resolution you're running at.
HiRes - Far Cry 3
The Titan is miles ahead of the GTX680 it replaces. There is still a fair performance hit from the higher 1440P resolution, but the Gainward card remains the finest of the top end models around at the moment.